Window Air Conditioner Repair Basics

In general, a malfunctioning window AC unit will be a cheaper fix than a central air system. Many issues will begin with a sudden reduction in the amount of cool air being emitted from the unit. In some cases, the process involved in fixing an air conditioner may be as simple as cleaning it, as opposed to a full scale repair. In this article, we will walk you through a few troubleshooting air conditioner repair tips to help you get that window air conditioner back up and running like new.

Tools:
Screwdriver
Bleach
Warm Water
Dish Washing Detergent
Heavy Duty Brush
Vacuum Cleaner
Fin Comb

Step 1 – Before you get started, be sure to unplug the unit. Once power has been shut off, unscrew and remove the grill. Some older models may require you to pry the grill off with the aid of a flathead screwdriver.

Step 2 – Gently slide the unit out from it’s spot inside the window frame. This is generally a two-person job. Make sure you have someone around to help you lift the unit and move it to a solid and sturdy area.

Step 3 – Take a close look at the unit’s mesh filter. You should find it covering the evaporator coil fins. Remove the filter and wash it with warm water, some dishwashing soap and a pinch of bleach. Shake out the filter so that any excess water is removed and sit it out to dry.

Step 4 – Add a brush attachment to your vacuum and run it over the evaporator coils. Once you are through vacuuming, use a heavy-duty brush to help remove any excess dirt that is still on the coils.

Step 5 – Pay close attention to the evaporator coil fins. Inspect them to make sure that they are all straight and use a tool called a fin comb to help straighten any bent fins you happen to come across. Bent fins can impede the flow of air coming from the unit. By taking the time to straighten them, you can rest assured that you will be receiving the maximum amount of air being produced by the unit.

Step 6 – Next, spin the unit around in order to get a good look at the condenser coils. These coils should be vacuumed in a similar fashion at the evaporator coils. Once again, you should employ the use of a heavy-duty brush to help in removing any excess dirt left behind by the vacuum. Use the fin comb again to straighten any bent coils you happen to find.

Step 7 – Next are the fan blades. Clean each blade before using the vacuum to remove any remaining dust or dirt particles. Once this is complete, you should be good to place the unit back onto the window frame. Place the mesh filter back onto the unit once it has dried completely. Replace the grill. Once you’re put back together, power the unit on and see how you’re doing. If you’re still having issues, you may want to call in the expertise of a professional air conditioner repair AC technician.